Phonograph record disk



Sept. l, 1931. P, J. SCHWARZHAUPT l821351 PHONOGRAPH RECORD DISK Filed Jan. 18, 1930 Inventur PauL J. Schwarzhcmu.pt, b Hi.s Attorneg.

Patented Sept. l, 1931 UNITED STATES PATENT OFFICE PAUL J. SCHWARZHAUPT, OF SCOTIA, NEW YORK, ASSIGNOR T GENERAL ELECTRIC COMPANY, A CORPORATION' OF NEW YORK PHONOGRAIH RECORD DISK Application filed January 18, 1930. Serial N0. 421,836.

My invention i'el2lhes to phonograph record disks and Particularly to record disks which are of such a nature that for playing the records thereon it is desirable t0 employ a fonn 0f needle other than that usually found with ordinary household phonographs. An example of such a record disk is that (in which a erson may recorcl a spoken message and transmit it through the mail t0 one who, up0n receiving the record, has only t0 play it in thc usual manner 0n his own phonograph to hear the 1nessage. Such record disks havc been successfully made 0f a paper basc covered with a lacquer in which thc. record grnove. is cut. It has been found, howcver, that in certaiu cases when such rccords were playc d using the sharp pointed stecl ueedles commonly employed with househol(l phonographs, the records Sustained cxcossive wear but that with a needle having a m01e rotmded point the life of th e rccor l was grcatly prolonged. Hence it btacmncs desirable to furnish the person receiving such a rccord with a playiug needle which is bctter adapted for playing the record than those which he is likely y to have 011 band. It is thc 0loject cf my invontion, thereforc, to provi le an improved pllonograph' rccord which cmr'ics with it a playing nee lle which isparticularly udapted for use in playing the 1cc0rd which it accompanies.

My invcntion Will be better undcrstood from thc/follmving dcscription taken in connection wit-h the accomp.anving drawings, und its scope will be pointccl out in the appended claims.

' Referring t0 the drawinus, Fig. 1 shows a record disk havin: a playing needle secure therein and Fig. 2 is a fragmentary cross sectional vicw drawn t0 a larger scale-of the part 0f the disk containing the needle.

In Fig. 1, I have shown the record disk 1 as one bearing n sound record 2. It may, howevcr, be a blank disk upon which the sound record is to be made. Itis shown as having a triangular hole 3 in the center adapting it 130 fit Over a similarly shaped center stud on the recording machine the hole being 0f such a size that the disk will just fit over the round turntable situd of the ordinary phonograph.

In that portion cf the disk between the cen ter hole and the record zone the disk is pr0= vided with an opening of a siZe adapted t0 receive a playing needle such as is commonly used for playing disk rccords. The needle opening may be made in various ways, f0r cxarnple, where the Ie0ord has a-pa er base and is blanked out of a large sheet e opening for thc ncedle -1nay be made at the same time that the disk is blanked and the opening 3 is punched. A spccial needle or stylus 4 having the f0nn of point which especially adapts thl2 neeclle for the playing of this record is embedded in the record disk by inserting it in the aforesaid openin The needle n1ay make a sufliciently tight t in the opening that it will not be lost out during transportation of the recoxd but I prefe r to insurc its retention in the disk by themse 0f some hardening liquid as shown ab 5 which, for

example, may be a drop 0r tvv"o of the lacquer which forms the record surface cf tlie disk. The pcrso n receiving the record has only t0 push out the needle using any suitable means ut band such as a pencil 0r jack knife and in uccoxclance with the direc'tions on the record 2. A phonograph record disk having a slol:

formed therein und a needle adapted for us'e in playing the record held in said slot.

3. A phonograph record disk having a playing needle embedded in a portion thereof not occupied by thc record grooves.

' 4. A phonograph record disk having a central blank portion provided with a slot, a needle adapted f0r the playing of the record occupying the slot and means for retaining the needle in the slot hlld pr0tecting it from moisture.

5. A phonograph ncord disk comprising 91 paper base having therein a slot and a lacquer record surface, and a needle occupying said slot and adapted for use in playing a recordformed 011 the disk, theneedle be1ng retained in position and protected from moisture by a small quantity of lacquer.

6. A phonograph record disk having means for holding a st-ylus adapted for use in the reproduction 0f the record.

7. A phonograph record disk having means at a portion thereof hot used for the record for holding a stylus adapted for use in the 'reproduction of the record.

8. A honograph record adapte to receive und hold a, reproducing. stylus adapted for use in the reproduction of the record.

9. A phonograph record disk provided with an openin in the malterial composing the disk adapte adapted for use in the reproduction of the record on the disk.

10. A phonograph record disk provided with an opening in the material comj osing the disk adapted to receive a recording stylus and means for securing the stylus in said opening.

11. phonograph record disk provided 'with an opening in the mateiial corxiposing the disk adapted to receive a recording stylus and means for retaining the stylus in the opening and for protecting it from moisture. In witness where of, I have hereto set my band this 17th day ofJanuary, 1930.

PAUL J. SCHWARZHAUPT disk having means to receivq a'nd hold a stylus 

